\begin{table}%t2
\caption{\label{psdfit}Results of the power-law fits to the power spectra.}
\small %\centerline
 {\begin{tabular}{cccccccc}
\hline \hline \noalign{\smallskip}
 & MJD &$I_{\rm X}^a$&Orbital&Number	&$\Gamma$ &rms (\%)&$\chi^2_{\rm r}$/d.o.f. \\
 & &c/s &phase$^b$&of PSD & &(0.001--1~Hz)& \\
\hline 
A	&54~235.16--54~236.11	&29	&0.87/0.93	&21	&1.87 $\pm$ 0.04	&37	&1.3/44\\
B	&54~236.86--54~238.00	&27	&0.06/0.03	&26	&1.77 $\pm$ .04	&34	&1.1/44\\
C	&54~238.00--54~239.06	&12	&0.17/0.09	&19	&1.55 $\pm$ 0.05	&30	&1.9/43\\
D	&54~239.09--54~241.03	&6	&0.33/0.17	&24	&$1.5^{\rm +0.09}_{-0.13}$	&28	&1.3/44\\
E	&54~241.05--54~242.20	&9	&0.50/0.25	&15	&1.5 $\pm$ 0.1	&23	&1.2/44\\
\hline 
\end{tabular}}
\medskip
 $^a$ Background subtracted 2--60 keV, PCU2 only; $^b$  at mid-point for $P_{\rm orb}=9.56$~d and $P_{\rm orb}=19.12$~d, respectively.
\end{table}